/*
 * Created on 15 May 2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.plugins.peers;

public interface Piece {
    public int getIndex();

    public int getLength();

    public boolean isDone();

    public boolean isNeeded();

    public boolean isDownloading();

    /**
     * indicates if this piece is free and available to be allocated for download not done, needed and not downloading
     * 
     * @return
     */

    public boolean isFullyAllocatable();

    /**
     * number of requests that are available to be made
     * 
     * @return
     */

    public int getAllocatableRequestCount();

    /**
     * Reserve this peice for a given peer - no other peer will be asked for the piece
     * 
     * @return
     */

    public Peer getReservedFor();

    /**
     * Set the peer that will be responsible for downloading the piece
     * 
     * @param peer
     */

    public void setReservedFor(Peer peer);
}
